Die grinder



FIG. 1 is a perspective view of a die grinder embodying the ornamental design of the present invention;

FIG. 2 is a side view of the die grinder of FIG. 1, the opposite side view being a mirror image;

FIG. 3 is a top view of the die grinder of FIG. 1;

FIG. 4 is a bottom view of the die grinder of FIG. 1;

FIG. 5 is a front view of the die grinder of FIG. 1; and,

FIG. 6 is a rear view of the die grinder of FIG. 1.

The broken line showings of FIGS. 1-6 are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a die grinder, as shown and described. 